So it did happen: the first time I had an actual problem with my Bambu X1C printer.
Sadly it was partially my fault: I had this filament that kept getting tangled, I respooled it and was able to print, but eventually it broke inside the AMS.
I thought it was a simple "oh it broke in the tubes", but no, it was actually broken inside the AMS *motor*, so I had a really hard time working on it.
Well, I'm glad that Bambu Lab has great videos and documentation.